Total nitrogen is the main soil property associated with soil fungal community in karst rocky desertification regions in southwest China

Qi, Defeng; Wieneke, Xuwen; Xue, Peipei; He, Ling; DeSilva, Udaya

doi:10.1038/s41598-021-89448-1

Cited by 8 publications

(3 citation statements)

References 70 publications

(77 reference statements)

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“…The effects of total nitrogen on fungal community composition are similarly well documented (Cline et al 2018;Xiao et al 2020;Moore et al 2021;Qi et al 2021;He et al 2021). Total nitrogen was the major driver in fungal community composition along a deserti cation gradient, accounting for 43% of the variation in community composition (Qi et al 2021). Fungal communities are also heavily involved in nitrogen cycling and thus can change nitrogen availability.…”

Section: Plant Height Is An Important Determinant Of Microbial Commun...mentioning

confidence: 84%

Habitat, plant height, and soil nutrients are important determinants of the Hypericum perforatum microbiome

Petipas

Higgins²,

Koechli³

et al. 2023

Preprint

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Aims Saint John’s wort, Hypericum perforatum, is a medicinally and ecologically important perennial plant species that has a broad global distribution. Despite the species’ importance, little is known about the factors that structure its microbial communities and the identity of microbes that enhance plant growth and fitness. Here we aim to describe the microbial communities associated with Hypericum perforatum and elucidate factors that structure these communities.Methods We collected H. perforatum root samples in three adjacent habitat types: wet and dry alvars (two types of limestone barren) and fallow agricultural fields (i.e. old-fields), in Jefferson County, New York. We used high-throughput amplicon sequencing of the SSU-rRNA gene (16S, bacteria) and the internal transcribed spacer region 1 (ITS1, fungi) to characterize the root microbiome of H. perforatum. At each root sampling location, we quantified aspects of the plant phenotype and soil characteristics to evaluate habitat variables that correlate with root microbial communities.Results Alvars had ~ 13% higher bacterial richness compared to old-fields. In contrast, old-fields had 28% higher fungal richness than dry alvars, but similar fungal richness to wet alvars. Habitat and plant height were important predictors of microbial community composition. We identified two bacterial taxa positively associated with plant height, both belonging to the bacterial phylum Actinobacteria.Conclusions This work contributes to our understanding of the environmental determinants of microbial community composition. Additionally, we were able to identify bacterial taxa that are correlated with plant health and should be investigated further as indicators of soil health or plant-growth promoting rhizobacteria.

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Section: Plant Height Is An Important Determinant Of Microbial Commun...mentioning

confidence: 84%

Habitat, plant height, and soil nutrients are important determinants of the Hypericum perforatum microbiome

Petipas

Higgins²,

Koechli³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Moreover, in heavy RD areas, the soil fungal community differs significantly from other degrees of RD, with soil total nitrogen being the main factor correlated with fungal communities, followed by pH [16]. The phylum Ascomycota is the most abundant in non-degraded soils, while Basidiomycota dominates in severe RD soils, and the ratio of Ascomycota to Basidiomycota decreases significantly with the deepening of RD, which can serve as an indicator of the degree of RD [16]. In the degraded karst ecosystems, a study has shown that soil degradation in the karst region reduced soil bacterial genetic diversity and significantly changed community structure [17].…”

Section: Introductionmentioning

confidence: 93%

“…In fact, the bacterial diversity slightly increases and the richness slightly decreases in severe RD areas. Moreover, in heavy RD areas, the soil fungal community differs significantly from other degrees of RD, with soil total nitrogen being the main factor correlated with fungal communities, followed by pH [16]. The phylum Ascomycota is the most abundant in non-degraded soils, while Basidiomycota dominates in severe RD soils, and the ratio of Ascomycota to Basidiomycota decreases significantly with the deepening of RD, which can serve as an indicator of the degree of RD [16].…”

Section: Introductionmentioning

confidence: 96%

Soil Microbial Communities in Pseudotsuga sinensis Forests with Different Degrees of Rocky Desertification in the Karst Region, Southwest China

Li,

He,

Feng

et al. 2023

Forests

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Rocky desertification (RD), a natural and human-induced process of land degradation in karst areas, has become the primary ecological disaster and one of the obstacles to sustainable ecological development in southwest China. Nevertheless, the variation of soil physical and chemical properties, bacterial and fungal communities, and their relationships in RD forests remains limited. Therefore, soil samples were collected from forests under four degrees of RD (NRD, non-RD; LRD, light RD; MRD, moderate RD; and SRD, severe RD) and subjected to high-throughput sequencing of 16S rRNA and ITS1 genes. The results showed a significant reduction in bacterial richness and diversity, while fungal richness and diversity decreased markedly and then showed a balanced trend with the increase in RD degree, indicating that bacteria and fungi did not present the same dynamics in response to the process of RD. The bacterial communities were dominated by Proteobacteria, Actinobacteria, Acidobacteria, and Chloroflexi, while the fungal communities were dominated by Basidiomycota, Ascomycota, and Mortierellomycota. The PCoA and NMDS demonstrated significant differences in microbial communities in study sites, among which the fungal communities in non-RD forest and LRD forest clustered together, suggesting that fungal communities were more stable than bacteria in RD forest. The db-RDA, Mantel test, and random forest model confirmed the important role of soil BD, pH, SOC, AN, and AP in driving microbial diversity and communities. The IndVal analysis suggested that Chloroflexi, Patescibacteria, Atheliales, and Cantharellales with high indicator values were identified as potential bio-indicators for RD forests. This study could not only improve our understanding of bacterial and fungal community dynamics across RD gradients, but also could provide useful information for the further use of microorganisms as indicators to reflect the environmental changes and ecosystem status during forest RD.

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An exploration of how plant and soil characteristics shape the Hypericum perforatum microbiome in three habitats

Petipas,

Higgins,

Koechli

et al. 2024

Plant Ecol

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Total nitrogen is the main soil property associated with soil fungal community in karst rocky desertification regions in southwest China

Cited by 8 publications

References 70 publications

Habitat, plant height, and soil nutrients are important determinants of the Hypericum perforatum microbiome

Habitat, plant height, and soil nutrients are important determinants of the Hypericum perforatum microbiome

Soil Microbial Communities in Pseudotsuga sinensis Forests with Different Degrees of Rocky Desertification in the Karst Region, Southwest China

An exploration of how plant and soil characteristics shape the Hypericum perforatum microbiome in three habitats

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